CARBON DIOXIDE CONTENT AND PH OF CARBONATED BEVERAGES
Article
Ehlen LA, Marshall TA, Qian F, Wefel JS, Warren JJ. Acidic beverages increase the riskof in vitro tooth erosion. Nutr Res; 28(5): 299-303.
This lab conducted by Leslie A Ehlen tested the hypothesis that pH and titratable acidities of soft drinks ultimately affects the amount of erosion of ones teeth. They tested the pH and titratable acidity of the drinks and then they stuck the teeth into these drinks for a certain amount of time, conducting an in vitro lab. Upon examining the teeth, they found that the acidity of the drink had little to do with how much erosion occurred. Apple juice had the least amount of erosion associated with it, even though it was also the most acidic beverage. Therefore this lab determined by in vitro methods that the pH and acidity of drinks does not affect the amount of decay a tooth will experience upon contact with this beverage.
This picture shows us trying to heat the bottles in order to get all the carbon dioxide out.
Results
Table 1: Data collected during the lab
Soda
Mass before
pH before/ immediately after opening the can
Mass after
pH after
Trial 1
+/- 0.2 grams
+/- 0.01
+/- 0.2 grams
+/- 0.01
Mendota Sparkling Water
371.2 grams
3.80
367.4 grams
Diet Coke
627.6 grams
3.18
620.8 grams
2.56
Second measurements
619.0 grams
3.15
Sprite
640.4 grams
3.10
634.9 grams
2.78
Second measurements
633.3 grams
3.27
Mountain Dew
654.4 grams
3.10
650.5 grams
2.49
Second measurements
648.7 grams
3.10
Mean Bean Java Monster
475.8 grams
6.76
472.1 grams
6.76
Monster Energy
517.7 grams
3.44
511.4 grams
3.32
Trial 2
+/- 0.2 grams
+/- 0.01
+/- 0.2 grams
+/- 0.01
Mendota Sparkling Water
363.7 grams
4.09
361.8 grams
4.74
Diet Coke
628.6 grams
2.84
620.5 grams
2.81
Sprite
642.9 grams
2.93
636.4 grams
3.85
Mountain Dew
652.6 grams
2.86
647.5 grams
2.57
Mean Bean Java Monster
480.8 grams
6.57
478.1 grams
6.72
Monster Energy
515.1 grams
3.24
511.7 grams
3.58
Table 2: Calculations and Change in pH or Mass
Soda
Change in Mass (Mass before- Mass after)
Change in pH (pH after – pH before)
Trial 1
+/- 0.4 grams
+/-0.02
Mendota Sparkling Water
3.8 grams
Diet Coke
6.8 grams
-0.62
Second measurements
8.6 grams
-0.03
Sprite
5.5 grams
-0.32
Second measurements
7.1 grams
+0.17
Mountain Dew
3.9 grams
-0.61
Second measurements
5.7 grams
0.00
Mean Bean Java Monster
3.7 grams
0.00
Monster Energy
6.3 grams
-0.12
Trial 2
+/- 0.4 grams
+/- .02
Mendota Sparkling Water
1.9 grams
+0.63
Diet Coke
8.1 grams
-0.03
Sprite
6.5 grams
+0.92
Mountain Dew
5.1 grams
-0.29
Mean Bean Java Monster
2.7 grams
+0.15
Monster Energy
6.3 grams
+0.34
Nutrition Labels:
Diet Coke
Sprite
Mountain Dew
Mean Bean Java Monster
Monster Energy
Mendota Sparkling Water
Observations:
The diet coke fizzed in a different way from the other sodas. I was almost smaller bubbles.
The mountain dew seemed to have the biggest bubbles.
The sodas were sitting in the sun overnight and for part of the morning
Side note: in trial 2 the diet coke was shaken too much and therefore may have lost some extra mass from that.
Summary Paragraph:
The data, in general, showed a change in pH when carbon dioxide was removed from the beverage. Mendota Sparkling Water pH changed by 0.63 when 1.9 grams of carbon dioxide was released into the air. Also Sprite’s carbon dioxide content changed by 6.5 grams and the pH increased by 0.93. Mountain Dew, however, lost 5.7 grams of carbon dioxide and the pH did not change. The Moutain Dew also had other things in it besides water and carbon dioxide, like erythorbic acid. This data, however, was not always consistent.
Article
Ehlen LA, Marshall TA, Qian F, Wefel JS, Warren JJ. Acidic beverages increase the riskof in vitro tooth erosion. Nutr Res; 28(5): 299-303.
This lab conducted by Leslie A Ehlen tested the hypothesis that pH and titratable acidities of soft drinks ultimately affects the amount of erosion of ones teeth. They tested the pH and titratable acidity of the drinks and then they stuck the teeth into these drinks for a certain amount of time, conducting an in vitro lab. Upon examining the teeth, they found that the acidity of the drink had little to do with how much erosion occurred. Apple juice had the least amount of erosion associated with it, even though it was also the most acidic beverage. Therefore this lab determined by in vitro methods that the pH and acidity of drinks does not affect the amount of decay a tooth will experience upon contact with this beverage.
This picture shows us trying to heat the bottles in order to get all the carbon dioxide out.
Results
Table 1: Data collected during the lab
Table 2: Calculations and Change in pH or Mass
(Mass before- Mass after)
(pH after – pH before)
Nutrition Labels:
Observations:
Summary Paragraph:
The data, in general, showed a change in pH when carbon dioxide was removed from the beverage. Mendota Sparkling Water pH changed by 0.63 when 1.9 grams of carbon dioxide was released into the air. Also Sprite’s carbon dioxide content changed by 6.5 grams and the pH increased by 0.93. Mountain Dew, however, lost 5.7 grams of carbon dioxide and the pH did not change. The Moutain Dew also had other things in it besides water and carbon dioxide, like erythorbic acid. This data, however, was not always consistent.